RUFFNECK™ DEFENDER® XT-311 AND XT-312 EXPLOSION-PROOF HEAVY-DUTY THERMOSTATS ARE THE SMALLEST LIGHTEST AND MOST DURABLE THERMOSTATS AVAILABLE. THESE THERMOSTATS ARE DESIGNED TO CONTROL HEATING ONLY COOLING ONLY OR VENTILATION SYSTEMS IN DEMANDING INDUSTRIAL APPLICATIONS. THESE INCLUDE OIL REFINERIES PETROCHEMICAL PLANTS PULP AND PAPER MILLS COAL MINES GRAIN ELEVATORS HAZARDOUS WASTE STORAGE FACILITIES AND OTHER HAZARDOUS LOCATIONS WHERE SPECIFIC EXPLOSIVE GASES OR DUST ARE PRESENT. FOR HAZARDOUS-LOCATION TEMPERATURE CONTROLS RELY ON DEFENDER® THERMOSTATS FOR THE MOST DEPENDABLE AND TROUBLE-FREE SERVICE AVAILABLE. RUFFNECK™ DEFENDER® XT-311 AND XT-312 THERMOSTAT'S UNIQUE AND HIGHLY ENGINEERED DESIGN OFFERS OUTSTANDING FEATURES AND BENEFITS. FEATURES UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" CERTIFICATIONS - UL-CUL ALL-ALUMINUM EXTERIOR NO BREAKABLE EXTERNAL PLASTIC PARTS NO EXPOSED COPPER OR BRASS CORROSION RESISTANT SUITABLE FOR H2 S ENVIRONMENTS COMPACT & LIGHTWEIGHT MORE COMPETITIVELY PRICED CFC & MERCURY FREE ENVIRONMENTALLY SAFE NO LEVELING REQUIRED 3-YEAR WARRANTY THE LONGEST TROUBLE-FREE WARRANTY IN THE INDUSTRY PRECISION DIE-CAST COMPONENTS GREATER CONSISTENCY BETTER QUALITY BIMETAL SENSING ELEMENT FAST-ACTING RELIABLE UNAFFECTED BY ALTITUDE NO DELICATE COILS OR BELLOWS RUGGED RELIABILITY 480 VAC MAXIMUM WIDER RANGE OF APPLICATIONS FOR USE WITH - THERMOSTAT SPST FOR USE ON RUFFNECK™ FX SERIES EXPLOSION-PROOF FORCED AIR UNIT HEATERS SPECIFICATIONS UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" TEMPERATURE RANGE 36°F TO 82°F (2°C TO 28°C) TEMPERATURE DIFFERENTIAL 2.5 F° (1.5 C°) NET WEIGHT 2.1 LBS (0.95 KG) SWITCHING SNAP ACTING CONDUIT OPENING 3/4"" - 14 NPT ELECTRICAL RATING UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" 22 AMPS RES 480 VAC MAX; HP @ 125 VAC 1 HP @ 250 VAC CLASS I DIVISION 1 & 2 GROUPS C & D
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